Smith2018c6sc04130b.pdf (1.88 MB)
A new class of Cu/ZnO catalysts derived from zincian georgeite precursors prepared by co-precipitation
journal contribution
posted on 2018-02-07, 12:25 authored by Paul J. Smith, Simon KondratSimon Kondrat, Philip A. Chater, Benjamin R. Yeo, Greg M. Shaw, Li Lu, Jonathan K. Bartley, Stuart H. Taylor, Michael S. Spencer, Christopher J. Kiely, Gordon J. Kelly, Colin W. Park, Graham J. HutchingsZincian georgeite, an amorphous copper-zinc hydroxycarbonate, has been prepared by co-precipitation using acetate salts and ammonium carbonate. Incorporation of zinc into the georgeite phase and mild ageing conditio ns inhibits crystallisation into zincian malachite or aurichalcite. This zincian georgeite precursor was used to prepare a Cu/ZnO catalyst, which exhibits a superior performance to a zincian malachite derived catalyst for methanol synthesis and the low temperature water-gas shift (LTS) reaction. Furthermore, the enhanced LTS activity and stability in comparison to that of a commercial Cu/ZnO/Al 2 O 3 catalyst, indicates that the addition of alumina as a stabiliser may not be required for the zincian georgeite derived Cu/ZnO catalyst. The enhanced performance is partly attributed to the exclusion of alkali metals from the synthesis procedure, which are known to act as catalyst poisons. The effect of residual sodium on the microstructural properties of the catalyst precursor was investigated further from preparations using sodium carbonate.
Funding
UK Catalysis Hub, Engineering and Physical Sciences Research Council (grants EP/K014714/1, EP/K014714/1, EP/K014668/1, EP/K014706/1, EP/I019693/1), and Johnson Matthey.
History
School
- Science
Department
- Chemistry
Published in
Chemical ScienceVolume
8Issue
3Pages
2436 - 2447Citation
SMITH, P.J. ... et al, 2017. A new class of Cu/ZnO catalysts derived from zincian georgeite precursors prepared by co-precipitation. Chemical Science, 8 (3), pp. 2436-2447.Publisher
© Royal Society of ChemistryVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by-nc/3.0/Acceptance date
2016-12-29Publication date
2017Notes
This is an Open Access Article. It is published by the Royal Society of Chemistry under the Creative Commons Attribution-NonCommercial 3.0 Unported Licence (CC BY-NC). Full details of this licence are available at: http://creativecommons.org/licenses/by-nc/3.0/ISSN
2041-6520eISSN
2041-6539Publisher version
Language
- en